Device for opening containers such as boxes, tins, or the like



June ,3, 1930. B. POLAK 1,762,076

DEVICE FOR OPENING CONTAINERS SUCH AS BOXES, PINS, OR THE LIKE Filed, Jan. 17, 1928 Patented dune ,3, 1930 i I V g V i 1 UNITED STATES F'F [C E BOHU MIL PoLAK, or raAeUnczEcHosLovAKIA I DEVICE FOR OPENING C(lNTAINiERS SUCH BOXES, TITTS, OR THE LIKE Application filed January 17, 1928, Serial No. 247,392 andin Germany December 12, 1927. This'inventionis concerned with improve: dle portion 1, the outside edge of which ments in or modifications of the devices for. bent up horizontally at all four rounded coropening containers such as boxes, tins or the ners'of its shape in plan, thus forming sharp;

like of the type claimed in the specification ly pointed edges 4. The peripheral rib 3 is V V 5 of my Patent No. 1,7 34,877 Ser. No. 150,311. 'stifiened on either side of the longitudinal 50 According to the present invention the axis of the opener by radial grooves5. The opener consists of a 'sheetm-etal strip having portions of the hollow rib 3 enclosed between a fiat centre portion with a pivot opening surthe pairs of grooves b are formed with ex- 7 rounded by a pressed up hollow rib and a tensions 6 which are located in the longitudi- 10 wing portion or portions extending longitunal axis of the opener and,in longitudinal sec-1.55 dinally of the opener, standing up from the tion (as illustrated in Fig. 2), are bent out centre portion and preferably formed with ma gentle curve so that they project from the convenient gripping means such as a spheribase surface of the middle portion 1 in the cal end or ends. 1 same direction as the peripheral rib 3 and The peripheral rib surrounding the pivot have. an approximately semi-circular cross-1 o opening may be stiffened by grooves formed section. The outside ends of the extensions 6 therein on eitherside of the longitudinal axis are shaped as hollow spheres 7 which provide of the opener, and its edge ispreferably bent a convenient means for handling the opener. up at right angles at all four rounded corners The opener is pivotally secured by means to form sharp edges tofacilitate engagement of a rivet to the lower or main portion of the .55

under the lid rim. e container 8 :towards the upper edge thereof Further to ensure said engagement under and preferably upon a flat ordepression the lid the lower portion of the container may thereon. On twisting the opener the sharp be furnished with a depression or flat upon edges 4: first of all engage under the rim of the 5 whichthe opener is pivoted with the aid of container lid 9 and upon further rotation the 70 the usual rivet. V a; w rim 9of the lid comes to bear on the wall of One embodiment of theinvention is illusthe peripheral rib 3 and may thus be re hated by way ofexample in the accompanymoved from the lower portion of i the con ing drawing in wh1ch: tainer. i r Fig. 1 is a plan view of an opener, Having now particularly described and; {15

Fig. 2 an elevational view partly insecascertained the nature of my said invention tion on the line 2-2 in Fig. 1, and in what manner the same is to be per- Fig. 3 a cross section on the line 33 of formed, I'declare that what I claim is: Fig. 1, Y 1. A lid raising cam for opening arecep 3 Fig. 4 a similar view of the opener in potacle of that type in which thelid has a side so sition upon the'container and wall telescoping frictionally over the side Fig.5 a similar View ofthe container with Y wall ofthe body of the receptacle, compristhe opener and lid removed. s

The opener, which is made of. thin sheet with the following structural elements, a

40 metal, consists of a metal strip the plain center portionhaving a pivot opening, an 5v middle portion 1 of which has an; opening 2 oblong rib surrounding the center portion for the rivet whereby said opener is pivotally elevated above said center C portion and" consecured to the wall 8 of the sheetmetal convex consld'ered from that si e which is 'adapttainer. The opener is furnished with a ed to lie away from the receptacle, a flange ing, a stamped sheet metal member formed j it pressed up hollowrib 3, surrounding the mid extending from said'rib at least from those gp I portionsthereof at the end of the diagonals or the oblong shape defined by said ribs said flange lying substantially in the plane of the center portion, and a handle extending in a 5 loggitudinal direction outwardly from said 2. A lid raising cam as claimed in claim 1, said rib being stifiened by grooves formed therein on either side of the longitudinal me 10 dium line of said cam.

In testimony whereof I have signed my name to this specification,

BOHUMIL PoLAK. 

